The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 13, 2015
Filed:
Mar. 31, 2014
Applicant:
Blackberry Limited, Waterloo, CA;
Inventors:
Anand Ravindra Oka, Waterloo, CA;
Nazih Almalki, Waterloo, CA;
Christopher Harris Snow, Kitchener, CA;
Assignee:
BLACKBERRY LIMITED, Waterloo, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01C 9/00 (2006.01); G01B 21/16 (2006.01); G06F 15/00 (2006.01); G01C 19/00 (2013.01);
U.S. Cl.
CPC ...
G01B 21/16 (2013.01); G01C 19/00 (2013.01); G06F 15/00 (2013.01);
Abstract
According to one aspect, a method of determining an attitude matrix on a portable electronic device. The method includes determining a first attitude matrix gradient using data from at least one of an accelerometer and a magnetometer, determining a second attitude matrix gradient using data from a gyroscope, fusing the first attitude matrix gradient and the second attitude matrix gradient based on a mixing coefficient to generate a fused gradient, and based on the fused gradient, updating a fine attitude matrix for the portable electronic device.